Low cost paging

ABSTRACT

Methods, systems, and apparatuses for wireless communication are described. A user equipment (UE) may establish a dynamic coverage enhancement (CE) configuration and then autonomously transition from one CE level to another while in idle mode. The network may blindly detect the CE change during a paging procedure. For example, a mobility management entity (MME) may store dynamic CE information, and it may provide the dynamic CE information to base stations when the UE is paged. In some cases, the base stations may autonomously retransmit paging messages at different CE levels based on the dynamic CE information. In other examples, the MME may direct the base station to retransmit at different CE levels.

CROSS REFERENCES

The present application for patent claims priority to U.S. ProvisionalPatent Application No. 62/137,174 by Griot et al., entitled “Low CostPaging,” filed Mar. 23, 2015, assigned to the assignee hereof, andexpressly incorporated by reference herein.

BACKGROUND

The following relates generally to wireless communication, and morespecifically to low cost paging. Wireless communications systems arewidely deployed to provide various types of communication content suchas voice, video, packet data, messaging, broadcast, and so on. Thesesystems may be capable of supporting communication with multiple usersby sharing the available system resources (e.g., time, frequency, andpower). Examples of such multiple-access systems include code divisionmultiple access (CDMA) systems, time division multiple access (TDMA)systems, frequency division multiple access (FDMA) systems, andorthogonal frequency division multiple access (OFDMA) systems, (e.g., aLong Term Evolution (LTE) system). A wireless multiple-accesscommunications system may include a number of base stations, eachsimultaneously supporting communication for multiple communicationdevices, which may be otherwise known as user equipment (UE).

A wireless network may utilize coverage enhancement techniques tocommunicate with a wireless device. In some cases, the channelconditions between a base station and the wireless device may change,and so the appropriate level of coverage enhancement may increase. Ifthis happens, a UE may not receive messages intended for it withoutcoordinating a new CE level; however, coordinating a new CE level maylimit the operating life of, or otherwise adversely affect, apower-limited device.

SUMMARY

A user equipment (UE), such as a low complexity machine typecommunication (MTC) device, may establish a dynamic coverage enhancement(CE) configuration and then autonomously transition from one CE level toanother while in idle mode. The network serving the UE may blindlydetect the CE change during a paging procedure. For example, a mobilitymanagement entity (MME) serving the UE may store the dynamic CEinformation, and the MME may provide the dynamic CE information to basestations within the network, e.g., when the MME pages the UE. In somecases, the base stations may autonomously retransmit paging messages atdifferent CE levels based on the dynamic CE configuration. In otherexamples, the MME may direct the base station to retransmit at differentCE levels. A base station that supports a dynamic CE configuration mayenable dynamic CE if the base station receives an indication from theMME or the UE, or both, in various examples. In some examples, the UEand MME may coordinate the dynamic CE configuration via non-accessstratum (NAS) signaling.

A method of wireless communication is described. The method may includeestablishing a dynamic CE configuration with a network entity,communicating in a connected mode utilizing a first CE level of thedynamic CE configuration, selecting a second CE level of the dynamic CEconfiguration while in an idle mode, and receiving a paging indicationtransmitted utilizing the second CE level while in the idle mode.

An apparatus for wireless communication is described. The apparatus mayinclude means for establishing a dynamic CE configuration with a networkentity, means for communicating in a connected mode utilizing a first CElevel of the dynamic CE configuration, means for selecting a second CElevel of the dynamic CE configuration while in an idle mode, and meansfor receiving a paging indication transmitted utilizing the second CElevel while in the idle mode.

A further apparatus for wireless communication is described. Theapparatus may include a processor, memory in electronic communicationwith the processor, and instructions stored in the memory and operable,when executed by the processor, to cause the processor to establish adynamic CE configuration with a network entity, communicate in aconnected mode utilizing a first CE level of the dynamic CEconfiguration, select a second CE level of the dynamic CE configurationwhile in an idle mode, and receive a paging indication transmittedutilizing the second CE level while in the idle mode.

A non-transitory computer-readable medium storing code for wirelesscommunication is described. The code may include instructions executableto establish a dynamic CE configuration with a network entity,communicate in a connected mode utilizing a first CE level of thedynamic CE configuration, select a second CE level of the dynamic CEconfiguration while in an idle mode, and receive a paging indicationtransmitted utilizing the second CE level while in the idle mode.

Some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein may further include processes,features, means, or instructions for communicating in the connected modeutilizing the second CE level based at least in part on the pagingindication. Additionally or alternatively, in some examples establishinga dynamic CE configuration with a network entity comprises indicatingsupport for dynamic CE paging.

In some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein, the support is indicated to amobility management entity (MME) via non-access stratum (NAS) signaling.Additionally or alternatively, in some examples the support is indicatedto a base station.

In some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein, the support indication isbased at least in part on a user configuration, an operatorconfiguration, or both. Additionally or alternatively, in some examplesthe operator configuration is enabled via an indication of dynamic CElevel enabled in a universal subscriber identity module (USIM), via anOpen Mobile Alliance Device Management (OMA DM) indication, or both.

Some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein may further include processes,features, means, or instructions for refraining from signaling anindication that the second CE level has been selected based at least inpart on the dynamic CE configuration. Additionally or alternatively,some examples may include processes, features, means, or instructionsfor monitoring system information for a dynamic CE support indication.

Some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein may further include processes,features, means, or instructions for determining that a base stationsupports the dynamic CE configuration based at least in part on thedynamic CE support indication, and reselecting a base station while inthe idle mode based at least in part on the determination. Additionallyor alternatively, some examples may include processes, features, means,or instructions for determining that a base station does not support thedynamic CE configuration based at least in part on the dynamic CEsupport indication, and refraining from reselecting the base stationwhile in the idle mode based at least in part on the determination.

Some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein may further include processes,features, means, or instructions for measuring a channel condition,wherein selecting the second CE level is based at least in part on thechannel condition. Additionally or alternatively, some examples mayinclude processes, features, means, or instructions for determining thata CE configuration timer has expired, wherein selecting the second CElevel is based at least in part the expiration of the CE configurationtimer.

In some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein, the second CE level isselected based at least in part on a limitation that the second CE levelis higher than the first CE level. Additionally or alternatively, insome examples the indication of support for dynamic CE level depends inpart on configuration, where the configuration consists at least on oneor more of user configuration or operator configuration wherein theoperator configuration consists of one or more of the following anindication of dynamic CE level enabled in the USIM and indication viaOMA DM.

A method of wireless communication at a base station is described. Themethod may include identifying a dynamic CE configuration for a wirelessdevice, transmitting a first paging message for the wireless deviceaccording to a first CE level of the dynamic CE configuration,determining that the wireless device has not responded to the firstpaging message, and transmitting a second paging message for thewireless device according to a second CE level of the dynamic CEconfiguration based at least in part on the determination.

An apparatus for wireless communication is described. The apparatus mayinclude means for identifying a dynamic CE configuration for a wirelessdevice, means for transmitting a first paging message for the wirelessdevice according to a first CE level of the dynamic CE configuration,means for determining that the wireless device has not responded to thefirst paging message, and means for transmitting a second paging messagefor the wireless device according to a second CE level of the dynamic CEconfiguration based at least in part on the determination.

A further apparatus for wireless communication is described. Theapparatus may include a processor, memory in electronic communicationwith the processor, and instructions stored in the memory and operable,when executed by the processor, to cause the processor to identify adynamic CE configuration for a wireless device, transmit a first pagingmessage for the wireless device according to a first CE level of thedynamic CE configuration, determine that the wireless device has notresponded to the first paging message, and transmit a second pagingmessage for the wireless device according to a second CE level of thedynamic CE configuration based at least in part on the determination.

A non-transitory computer-readable medium storing code for wirelesscommunication is described. The code may include instructions executableto identify a dynamic CE configuration for a wireless device, transmit afirst paging message for the wireless device according to a first CElevel of the dynamic CE configuration, determine that the wirelessdevice has not responded to the first paging message, and transmit asecond paging message for the wireless device according to a second CElevel of the dynamic CE configuration based at least in part on thedetermination.

Some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein may further include processes,features, means, or instructions for determining that the wirelessdevice is in an idle mode. Additionally or alternatively, some examplesmay include processes, features, means, or instructions for transmittinga third paging message for the wireless device according to the first CElevel based at least in part on the determination.

In some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein, the third paging message istransmitted simultaneously with the second paging message. Additionallyor alternatively, in some examples identifying the dynamic CEconfiguration comprises receiving NAS signaling from the wirelessdevice.

Some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein may further include processes,features, means, or instructions for transmitting a dynamic CE supportindication to the wireless device. Additionally or alternatively, someexamples may include processes, features, means, or instructions fortransmitting a dynamic CE support indication to a base station servingthe wireless device.

In some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein, identifying the dynamic CEconfiguration comprises receiving a context release complete messagefrom a base station comprising paging information, dynamic CEconfiguration information, or both. Additionally or alternatively, insome examples transmitting the first paging message or the second pagingmessage comprises sending a paging request to a set of base stations ina tracking area.

Some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein may further include processes,features, means, or instructions for receiving a message from thewireless device. Additionally or alternatively, some examples mayinclude processes, features, means, or instructions for transmitting astop paging request based at least in part on the message from thewireless device.

Some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein may further include processes,features, means, or instructions for retransmitting the first pagingmessage a threshold number of times, wherein transmitting the secondpaging message is based at least in part on retransmitting the firstpaging message the threshold number of times. Additionally oralternatively, in some examples transmitting the second paging messagecomprises indicating a CE level adjustment index indicating whether touse the first CE level, the second CE level, another CE level, or anycombination thereof. Additionally or alternatively, in some examplestransmitting the second paging message may include transmitting a numberof retransmissions of the first paging message indicating whether to usethe first CE level, the second CE level, another CE level, or anycombination thereof.

Some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein may further include processes,features, means, or instructions for receiving a CE level adjustmentindex from a core network entity, wherein the second CE level is basedat least in part on the adjustment index. Additionally or alternatively,some examples may include processes, features, means, or instructionsfor receiving additional information associated with the first CE levelfrom a core network entity, wherein the second CE level is based atleast in part on the additional information. Additionally oralternatively, some examples may include processes, features, means, orinstructions for receiving a paging request from a core network entity,wherein transmitting the first paging message or transmitting the secondpaging message is based at least in part on the paging request.

Some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein may further include processes,features, means, or instructions for receiving a dynamic CE supportindication from a core network entity. Some examples of the method,apparatuses, or non-transitory computer-readable medium described hereinmay further include processes, features, means, or instructions forreceiving a dynamic CE value from a core network entity. Additionally oralternatively, some examples may include processes, features, means, orinstructions for transmitting a radio resource control (RRC)configuration message to the wireless device comprising the dynamic CEconfiguration.

Some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein may further include processes,features, means, or instructions for transmitting a context releasecomplete message to a core network entity comprising paging information,dynamic CE configuration information, or both. Additionally oralternatively, some examples may include processes, features, means, orinstructions for broadcasting a dynamic CE support indication.

Some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein may further include processes,features, means, or instructions for configuring the wireless devicewith a CE configuration timer. Additionally or alternatively, in someexamples the second CE level is based at least in part on a limitationthat the second CE level is higher than the first CE level.

A method of wireless communication at a core network entity isdescribed. In some examples, the method may include identifying adynamic CE configuration for a wireless device, transmitting a firstpaging message for the wireless device to be used by a base stationaccording to a first CE level of the dynamic CE configuration,determining that the wireless device has not responded to the firstpaging message, and transmitting additional information regarding thedynamic CE configuration based at least in part on the determination.

An apparatus for wireless communication is described. In some examples,the apparatus may include means for identifying a dynamic CEconfiguration for a wireless device, means for transmitting a firstpaging message for the wireless device to be used by a base stationaccording to a first CE level of the dynamic CE configuration, means fordetermining that the wireless device has not responded to the firstpaging message, and means for transmitting additional informationregarding the dynamic CE configuration based at least in part on thedetermination.

A further apparatus for wireless communication is described. In someexamples, the apparatus may include a processor, memory in electroniccommunication with the processor, and instructions stored in the memoryand operable, when executed by the processor, to cause the processor toidentify a dynamic CE configuration for a wireless device, transmit afirst paging message for the wireless device to be used by a basestation according to a first CE level of the dynamic CE configuration,determine that the wireless device has not responded to the first pagingmessage, and transmit additional information regarding the dynamic CEconfiguration based at least in part on the determination.

A non-transitory computer-readable medium storing code for wirelesscommunication is described. In some examples, the code may includeinstructions executable to identify a dynamic CE configuration for awireless device, transmit a first paging message for the wireless deviceto be used by a base station according to a first CE level of thedynamic CE configuration, determine that the wireless device has notresponded to the first paging message, and transmit additionalinformation regarding the dynamic CE configuration based at least inpart on the determination.

Some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein may include processes,features, means, or instructions for determining that the wirelessdevice is in an idle mode. Additionally or alternatively, in someexamples transmitting additional information regarding the dynamic CEconfiguration may include transmitting a second paging message for thewireless device to be used by the base station based at least in part onthe determination. Additionally or alternatively, some examples mayinclude processes, features, means, or instructions for transmitting athird paging message for the wireless device to be used by the basestation according to the first CE level based at least in part on thedetermination.

Some examples of the method, apparatuses, or non-transitorycomputer-readable medium described herein may include processes,features, means, or instructions for transmitting a dynamic CE supportindication to a base station serving the wireless device. Additionallyor alternatively, some examples may include processes, features, means,or instructions for transmitting a dynamic CE value to a base stationserving the wireless device.

In some examples, identifying the dynamic CE configuration may includereceiving a context release complete message from a base stationcomprising paging information or dynamic CE configuration information,or both.

Additionally or alternatively, some examples may include processes,features, means, or instructions for transmitting the first pagingmessage or the second paging message may include sending a pagingrequest to a set of base stations in a tracking area.

BRIEF DESCRIPTION OF THE DRAWINGS

Aspects of the disclosure are described in reference to the followingfigures:

FIG. 1 illustrates an example of a wireless communications system thatsupports low cost paging in accordance with various aspects of thepresent disclosure;

FIG. 2 illustrates an example of a wireless communications system thatsupports low cost paging in accordance with various aspects of thepresent disclosure;

FIGS. 3-4 illustrate examples of process flows in a system or systemsthat support low cost paging in accordance with various aspects of thepresent disclosure;

FIGS. 5-7 show block diagrams of a wireless device or devices thatsupport low cost paging in accordance with various aspects of thepresent disclosure;

FIG. 8 illustrates a block diagram of a system including a userequipment (UE) that supports low cost paging in accordance with variousaspects of the present disclosure;

FIGS. 9-11 show block diagrams of a network entity or entities thatsupport low cost paging in accordance with various aspects of thepresent disclosure;

FIG. 12A illustrates a block diagram of a system including a basestation that supports low cost paging in accordance with various aspectsof the present disclosure;

FIG. 12B illustrates a block diagram of a system including a mobilitymanagement entity (MME) that supports low cost paging in accordance withvarious aspects of the present disclosure; and

FIGS. 13-18 illustrate methods for low cost paging in accordance withvarious aspects of the present disclosure.

DETAILED DESCRIPTION

A user equipment (UE), such as a low cost machine type communications(MTC) device, may establish a dynamic coverage enhancement (CE)configuration and then autonomously transition from one CE level toanother while in idle mode. The network may blindly detect the CE changeduring the paging procedure.

Aspects of the disclosure are initially described in the context of awireless communication system. Specific examples are then described inwhich one or more base stations may autonomously retransmit pagingmessages at different CE levels based on the dynamic CE configuration.Other examples are described in which the MME may direct the basestation to retransmit at different CE levels. These and other aspects ofthe disclosure are further illustrated by and described with referenceto apparatus diagrams, system diagrams, and flowcharts that relate todynamic CE.

FIG. 1 illustrates an example of a wireless communications system 100that supports low cost paging in accordance with various aspects of thepresent disclosure. The wireless communications system 100 includes basestations 105, UEs 115, and a core network 130. In some examples, thewireless communications system 100 may be a Long Term Evolution(LTE)/LTE-advanced (LTE-a) network.

The base stations 105 may wirelessly communicate with the UEs 115 viaone or more base station antennas. Each of the base stations 105 mayprovide communication coverage for a respective geographic coverage area110. The communication links 125 shown in wireless communications system100 may include uplink (UL) transmissions from a UE 115 to a basestation 105, or downlink (DL) transmissions, from a base station 105 toa UE 115.

The UEs 115 may be dispersed throughout the wireless communicationssystem 100, and each UE 115 may be stationary or mobile. A UE 115 mayalso be referred to as a mobile station, a subscriber station, a remoteunit, a wireless device, an access terminal, a handset, a user agent, aclient, or some other suitable terminology. A UE 115 may also be acellular phone, a wireless modem, a handheld device, a personalcomputer, a tablet, a personal electronic device, a machine typecommunication (MTC) device or the like. The UEs 115 may communicate withbase stations 105, and may dynamic CE.

Some types of wireless devices may provide for automated communication.Automated wireless devices may include those implementingMachine-to-Machine (M2M) communication, internet of things (IoT)communication or MTC. M2M, IoT, or machine type communication (MTC) mayrefer to data communication technologies that allow devices tocommunicate with one another or with the internet via a base station 105without human intervention. For example, M2M or MTC may refer tocommunications from devices that integrate sensors or meters to measureor capture information and relay that information to a central server orapplication program that can make use of the information or present theinformation to humans interacting with the program or application. SomeUEs 115 may be MTC devices, such as those designed to collectinformation or enable automated behavior of machines. Examples ofapplications for MTC devices include smart metering, inventorymonitoring, water level monitoring, equipment monitoring, healthcaremonitoring, wildlife monitoring, weather and geological eventmonitoring, fleet management and tracking, remote security sensing,physical access control, transaction-based business charging, andwearable devices (e.g., biometric monitoring devices). An MTC devicemay, in some examples, operate using half-duplex (one-way)communications at a reduced peak rate. MTC devices may also beconfigured to enter a power saving “deep sleep” mode when not engagingin active communications.

The base stations 105 may support, and may communicate with the corenetwork 130 and with one another to provide dynamic CE information inorder to support low cost paging. For example, the base stations 105 mayinterface with the core network 130 through backhaul links 132 (e.g.,S1, etc.). The base stations 105 may also communicate with one anotherover backhaul links 134 (e.g., X2, etc.) either directly or indirectly(e.g., through core network 130). The base stations 105 may performradio configuration and scheduling for communication with the UEs 115,or may operate under the control of a base station controller (notshown). In various examples, base stations 105 may be macro cells, smallcells, hot spots, or the like. The base stations 105 may also bereferred to as eNodeBs (eNBs) 105 in some examples.

The core network 130 may be an evolved packet core (EPC), which mayinclude at least one mobility management entity (MME) 135, at least oneserving gateway (S-GW) 140, and at least one PDN gateway (P-GW). The MME135 may be the node that processes control plane signaling between theUE 115 and the EPC (i.e., core network 130). All user IP packets may betransferred through the S-GW 140, which itself may be connected to theP-GW. The P-GW may provide IP address allocation as well as otherfunctions. The P-GW may be connected to the network operator's IPservices. The operator's IP services may include the Internet, theIntranet, an IP Multimedia System (IMS), and a Packet-Switched (PS)Streaming Service (PSS).

MME 135 may be involved in the network connectionactivation/deactivation process and may also be involved inauthenticating a user in coordination with an home subscriber server(HSS). Non Access Stratum (NAS) signaling—which may be used for theestablishment of communication sessions and for maintaining continuouscommunications with UEs 115 as they move—may be initiated or directed atthe MME 135. The MME 135 may also allocate a temporary identity to a UE115. For example, the MME 135 may allocate a globally unique temporaryidentity (GUTI) to a UE 115 that includes identification information forthe MME 135 as well as a temporary identity for the UE 115. A GUTI mayminimize the frequency with which a persistent identity, e.g., aninternational mobile subscriber identity (IMSI), is transmitted withinthe network. The MME 135 may also check whether a UE 115 is authorizedto camp on a service provider's Public Land Mobile Network (PLMN), andmay manage security keys for non-access stratum (NAS) signaling such asattachment procedures for UEs 115 and handles the security keymanagement.

In some cases, wireless communication system 100 may utilize coverageenhancement (CE) techniques to improve the quality of a communicationslink 125 for UEs 115 located at a cell edge, operating with low powertransceivers, or experiencing high interference or path loss. CEtechniques may include increase transmission time interval (TTI)bundling, HARQ retransmission, physical uplink shared channel (PUSCH)hopping, beamforming, power boosting, or other techniques. The CEtechniques used may depend on the specific needs of UEs 115 in differentcircumstances. For example, TTI bundling may involve sending multiplecopies of the same information in a group of consecutive TTIs ratherthan waiting for a negative acknowledgement (NACK) before retransmittingredundancy versions. This may be effective for users engaging in voiceover Long Term evolution (VoLTE) or VOIP communications. In other cases,the number of HARQ retransmissions may also be increased. Uplink datatransmissions may be transmitted using frequency hopping to achievefrequency diversity. Beamforming may be used to increase the strength ofa signal in a particular direction, or the transmission power may simplybe increased. In some cases, one or more CE options may be combined andCE levels may be defined based on a number of decibels the techniquesare expected to improve a signal (e.g., no CE, 5 dB CE, 10 dB CE, 15 dBCE, etc.).

A UE 115 may enter an idle mode and periodically wake up to receivepaging messages. For example, the UE 115 may be configured with a DRXcycle, which may include idle mode operation. A DRX cycle consists of an“On Duration” when the UE 115 may monitor for control information (e.g.,on PDCCH) and a “DRX period” when the UE 115 may power down radiocomponents and transition to an idle mode.

In some cases, a UE 115 in idle mode may be assigned a paging radionetwork temporary identity (P-RNTI). If the S-GW receives data for theUE 115, it may notify the MME, which may send a paging message to everybase station 105 within an area known as a tracking area. Each basestation 105 within the tracking area may send a paging message with theP-RNTI. Thus, the UE may remain in idle without updating the MME untilit leaves the tracking area.

A base station 105 may, for instance, page a UE 115 using one of four CElevels (e.g., no CE, 5 dB CE, 10 dB CE, or 15 DB CE), which may beeither dynamic or static CE levels. The UE 115 may be an MTC device andmay operate using an assigned CE corresponding to the CE level used forthe paging procedure. The UE 115 may determine which CE level to usebased on measured channel conditions. Channel conditions may changefrequently for a UE 115 that is moving; therefore, the device may choosea dynamic or semi-static CE level (e.g., 5 dB) based on a worst caseassessment to save power or reduce overhead. Channel conditions for adevice that is quasi-stationary may change at slower rates. Therefore,the device may dynamically determine a new CE level after performing achannel assessment.

In some cases, the MME 135 may store the CE levels and other paginginformation for one or more CE enabled devices. For example, the MME 135may maintain information for a UE 115 when the UE 115 moves to the RRCidle state. In another example, a base station may determine the CElevel of the UE 115 supporting a dynamic CE configuration duringRRC-Connected operation. The base station 105 may then pass theassociated CE level to the MME 135 for storage. In some cases, the UE115 supporting a dynamic CE configuration may enter an idle state. Whilein the idle the state the device may continue to monitor channelcharacteristics. In some cases, the UE 115 supporting a dynamic CEconfiguration may use the same CE level that was used in the connectedstate. In other cases, the UE 115 supporting a dynamic CE configurationmay move to a higher CE level (e.g., no CE→5 dB CE, 5 dB CE→410 dB CE,etc.) based on the measured channel conditions.

Since the UE 115 supporting a dynamic CE configuration may be in an idlestate, the CE level change may occur without the network's knowledge.Therefore, a base station 105 may page the UE 115 supporting a dynamicCE configuration using a CE level that the UE 115 supporting a dynamicCE configuration is no longer using (e.g., based on paging informationprovided by the MME 135). The UE 115 supporting a dynamic CEconfiguration may explicitly indicate the CE level to the network uponsuccessfully receiving a paging message and reconnecting to the network.However, reconnecting to the network may increase signal overhead andpower consumption, and it may be unnecessary if the UE 115 supporting adynamic CE configuration is not paged prior to the next UE initiatedconnection.

In some cases, a UE 115 in idle mode may perform a cell selectionprocedure to establish a connection with a base station 105 or toreselect a neighboring cell with better performance or higher priority.The selection procedure may include a determination of whether acandidate cell meets minimum selection criteria (S-criteria) and toselect among several available cells. S-criteria may include referencesignal received power (RSRP) (or reference signal received quality(RSRQ)), a minimum signal power threshold, a public land mobile network(PLMN) priority offset, a maximum transmit power, and a hysteresisparameter (to avoid ping-ponging between cells). Each cell may transmitits own minimum RSRP, cell priority, and maximum transmit power, and CEcapabilities in broadcast system information messages. Such informationmay be broadcast in system information blocks (SIBs); and S-criteria, CEcapabilities and the like may be broadcast in SIB1. Cells may alsoconvey corresponding values for neighboring cells (e.g., in SIB4 andSIB5).

A UE 115 may begin a cell selection procedure by identifying a set ofavailable PLMNs, selecting the highest priority PLMN (e.g., the homePLMN), and then selecting the best available cell in the selected PLMN.If a UE 115 is camped on a cell, it may periodically perform a cellsearch and rank available cells based on the S-criteria. If the UE 115determines that a non-serving neighbor cell has qualifying S-criteria(e.g., the signal strength is sufficiently high), and the rank of theneighbor cell is higher than the rank of the serving cell, then the UEmay reselect to the higher rank cell. If the UE 115 performs the cellsearch while connected to a visitor public land mobile network (VPLMN),it may use the priority offset to give preference to a home PLMN (oranother higher priority PLMN).

Thus, a UE 115 may refrain from indicating a change in CE level to thenetwork, and the network may use blind adjustments of the CE level todetermine the correct CE level associated with the UE 115 supporting adynamic CE configuration. In some examples, the UE 115 supporting adynamic CE configuration may send an initial CE level and a dynamic CElevel indicator to a base station 105. The MME 135 may store contextinformation for the UE 115 supporting a dynamic CE configurationincluding CE level information. The UE 115 supporting a dynamic CEconfiguration may enter the idle mode, and the MME 135 may send a pagingrequest for the UE 115 supporting a dynamic CE configuration to a basestation 105. The paging request may include the last known CE level forthe UE 115 supporting a dynamic CE configuration and an indicator thatdynamic CE level adjustment is enabled for the UE 115. The base station105 may then page the UE 115 using the last known CE level. If the basestation 105 does not receive a response from the UE 115 supporting adynamic CE configuration, the base station 105 may page the UE 115 againusing a second CE level (e.g., 0 CE→5 dB CE). The base station 105 maycontinue paging at different CE levels until the UE 115 is reached oruntil a maximum number of pages has been performed.

FIG. 2 illustrates an example of a wireless communication system 200 forlow cost paging in accordance with various aspects of the presentdisclosure. That is, wireless communication system 200 may illustrateaspects of or operation in wireless communication system 100, in which aUE 115 establishes a dynamic CE configuration and then autonomouslytransitions or moves from one CE level to another while in idle mode.Wireless communications system 200 may include UE 115-a, base station105-a, and MME 135-a, which may be examples of a UE 115, base station105, or MME 135-a; base station 105-a and UE 115-a may communicate withone another via communications link 205, which may be an RRC connection,when UE 115-a is within coverage area 110-a; base station 105-a and MME135-a may communicate with one another through backhaul link 132-a asgenerally described with reference to FIG. 1.

In some examples, UE 115-a may be configured to request dynamic CE levelpaging (e.g., as opposed to static CE level paging). This may be basedon the type or category of device of UE 115. For example, wearables ordevices used in meters or sensors (which may be semi-staticallypositioned) may be configured for dynamic CE level paging, and UE 115may be such a device.

UE 115-a may establish an RRC connection 205 with base station 105-a. UE115-a and base station 105-a may determine an appropriate CE level(e.g., from a limited selection of CE options supported by the network)based on channel conditions. If UE 115-a enters idle mode uponconnection release, the base station 105-a may pass context information,including the last known CE level, to MME 135-a. While in the idlestate, base station 105-a may remove the context information for UE115-a from memory and UE 115-a may move to a new location withincoverage area 110-a (e.g., near the edge of the coverage are 110-a). UE115-a may take channel measurements at the new location. In some cases,UE 115-a may determine that a more aggressive CE level (e.g., 10 dB CE)is appropriate based on the channel measurements and may change anassociated CE level. However, since UE 115-a may be operating in theidle state, UE 115-a may refrain from indicating the change to thenetwork (e.g., base station 105-a or MME 135-a), which may allow UE115-a to conserve battery power or other resources.

Subsequently, MME 135-a may receive a notification of pending data forUE 115-a while UE 115-a is in the idle state; for instance, S-GW 140(FIG. 1) may notify MME 135-a of pending data for UE 115-a. MME 135-amay then send a paging request to some or all base stations 105 withinthe tracking area for UE 115-a, including base station 105-a. The pagingrequest may include context information for UE 115-a, including the lastknown CE level, the UE category, and an indication that dynamic CE leveladjustment is enabled for UE 115-a. Base station 105-a may then page UE115-a according to the received context information. However, since UE115-a may have changed the CE level (e.g., to 10 dB CE), base station105-a may transmit using the wrong CE level (e.g., 5 dB CE). In somecases, the CE level may determine resources used, modulation and codingscheme (MCS) or other aspects of the paging communication.

Accordingly, UE 115-a may fail to decode and respond to the pagingrequest. Base station 105-a may then begin blind CE level adjustment.Base station 105-a may page UE 115-a a second time using a second CElevel (e.g., 10 dB CE). In this case, UE 115-a may successfully decodeand respond to the second page based on the second CE level and the CElevel set at the UE 115-a. Base station 105-a may then establish ansubsequent RRC connection 205-a with UE 115-a.

Establishing a dynamic CE configuration may include coordination betweenUE 115-a, base station 105-a and ME 135-a. For example, an indication ofsupport from each device may be used. In one approach, RRC negotiationoccurs between UE 115-a and base station 105-a, with an MME supportindication in S1. That is, MME 135-a may send an indication to basestation 105-a via S1 that dynamic CE level paging is possible (e.g., thecore network indicates supports for dynamic CE). Then UE 115-a mayindicate support for dynamic CE to base station 105-a. Base station105-a may enable dynamic CE after receiving authorization from MME135-a, and, in some examples, based on the indication from UE 115-a.Base station 105-a may explicitly signal the dynamic CE configuration toUE 115-a via RRC configuration. Base station 105-a may then confirm toMME 135-a that dynamic CE paging has been enabled via 51.

In another approach, NAS negotiation between UE 115-a and MME 135-a maybe used to establish the dynamic CE configuration. UE 115-a may firstprovide an indication to MME 135-a in NAS for dynamic CE level support.MME 135-a may then provide an indication that it supports dynamic CElevel paging to UE 115-a. MME 135-a may also provide an indication tobase station 105-a for dynamic CE reporting in the S1 UE context. UE115-a may monitor the CE levels from system information, and basestation 105-a may report the selected CE level to MME 135-a in the S1release message.

In some cases, cell selection or re-selection may depend on support fordynamic CE. For example, when UE 115-a is configured with a certain CElevel, if a new cell supports that CE level (and in some cases, if thenew cell supports dynamic CE paging procedures), UE 115-a may camp onit. UE 115-a may acquire the supported CE levels of new cell by, forinstance, directly acquiring the supported CE levels from the systeminformation (e.g., a master information block (MIB) or SIB of new cell),or indirectly by acquiring the supported CE levels in a SIB from aneighbor cell that UE 115-a previously camped on. If the CE level orconfiguration is not supported by the new cell, UE 115-a may select adifferent cell. In some cases, UE 115-a determines (e.g., based onchannel measurements) the appropriate CE level on new cell. If theidentified CE level is supported, UE 115-a may camp on the cell andmonitor paging at new CE level. Otherwise, UE 115-a may attempt toselect a new cell to camp. If no new cell found UE 115-a may camp on thebest available cell (e.g., based on RSRP). Alternatively, UE 115-a maycamp on the cell with best combination of signal strength and CEsupport.

FIG. 3 illustrates an example of a process flow 300 in a system thatsupports low cost paging in accordance with various aspects of thepresent disclosure. Process flow 300 may include operations performed byUE 115-b, base station 105-b, base station 105-c, and MME 135-b, whichmay be examples of a UE 115, base stations 105, and an MME 135-b, eachof which may be examples of corresponding devices described above withreference to FIGS. 1 and 2. In some examples, UE 115-b may establish aconnection based on a first CE level with base station 105-b, and uponentering an idle state the first CE level may be stored at MME 135-b. UE115-b may continue to monitor channel conditions, and may select asecond CE level without indicating the change in CE level to the network(e.g., base station 105-b, base station 105-c, or MME 135-b). MME 135-bmay receive a paging notification for UE 115-b and may send a pagingrequest, including the first CE level and dynamic CE level indicator, tobase station 105-b and neighboring base station 105-c. Base station105-b and base station 105-c may both be located in the same trackingarea and may both blindly transmit multiple paging messages to UE 115-bat different CE levels until a response is received.

At step 305, UE 115-b and base station 105-b may establish an RRCconnection. Establishing the RRC connection may include sending contextinformation (e.g., device ID, UE-capabilities, CE level, dynamic CEindication, etc.) for UE 115-b to MME 135-b, where the information maybe stored. In some cases, the information may be stored uponestablishing the connection, but in some cases, the information isstored upon connection release. The stored information may betransparent to MME 135-b. In some examples, the base station 105-b maysend an additional message to MME 135-b notifying MME 135-b that the UE115-b is enabled for dynamic CE level adjustment. In other cases, UE115-b may directly notify MME 135-b via the non-access stratum (NAS).

In some examples, establishing a dynamic CE configuration includesindicating support for dynamic CE paging. The support may be indicatedto MME 135-b via NAS signaling. In some examples, the support isindicated to a base station. In some examples, the support indication isbased on a user configuration, an operator configuration, or both. Theoperator configuration may be enabled via an indication of dynamic CElevel enabled in a universal subscriber identity module (USIM), via anOpen Mobile Alliance Device Management (OMA DM) indication, or both.

At step 310, the network may perform an RRC release procedure. In somecases, the release procedure may occur if UE 115-b enters into an idlemode. The RRC release procedure may include releasing the RRC connection310-a between UE 115-b and base station 105-b, sending a context releaserequest 310-b from base station 105-b to MME 135-b, sending a contextrelease command 310-c from MME 135-b to base station 105-b, andresponding to MME 135-b indicating that the context release is complete310-d.

At step 315, UE 115-b may determine a CE level based on monitoringchannel conditions. Determining the CE level may include performingchannel measurements to determine whether a higher CE level may be used.For example, if UE 115-b determines that the channel measurements crossa threshold level, the UE 115-b may select a new CE level. For instance,UE 115-b may change the CE level from the first CE level (e.g., 5 dB CE)to the second CE level (e.g., 10 dB CE). In some cases, the second CElevel selected by UE 115-b may not be advertised to the network, such asto base stations 105-b and 105-c and MME 135-b.

In some cases, UE 115-b may select a new CE level based on determiningthat a CE configuration timer has expired. In some examples, the secondCE level is selected based on a limitation that the second CE level ishigher than the first CE level.

At step 320, MME 135-b may receive a paging notification for UE 115-b. Apaging notification may include receiving a downlink data notificationmessage from the S-GW directing MME 135-b to page the desired UE 115-b.MME 135-b may then send paging requests 325 and 330 to each basestation, such as base stations 105-b and 105-c, in the last knowntracking area. The paging request 325 and 330 may include the storedcontext information, such as the last known CE level (e.g., 5 dB CE) andthe dynamic CE indicator, for UE 115-b.

In some examples, methods of wireless communication at a core networkentity, may be performed. As one example of a core network entity, anMME (e.g., MME 135-b) may perform one or more elements of the methods ofwireless communication. In some examples, the methods may includeidentifying a dynamic CE configuration for a wireless device,transmitting a first paging message for the wireless device to be usedby a base station according to a first CE level of the dynamic CEconfiguration, determining that the wireless device has not responded tothe first paging message, and transmitting additional informationregarding the dynamic CE configuration based at least in part on thedetermination.

In some examples, the methods may include determining that the wirelessdevice is in an idle mode. In some examples, transmitting additionalinformation regarding the dynamic CE configuration may includetransmitting a second paging message for the wireless device to be usedby the base station based at least in part on the determination.

Additionally, or alternatively, the methods may include transmitting athird paging message for the wireless device to be used by the basestation according to the first CE level based at least in part on thedetermination. In some examples, the methods may include transmitting adynamic CE support indication to a base station serving the wirelessdevice. Additionally, or alternatively, the methods may includetransmitting a dynamic CE value to a base station serving the wirelessdevice. In some examples, identifying the dynamic CE configuration mayinclude receiving a context release complete message from a base stationcomprising paging information or dynamic CE configuration information,or both. In some examples, transmitting the first paging message or thesecond paging message may include sending a paging request to a set ofbase stations in a tracking area.

At step 335 and 340, base stations 105-b and 105-c (which may be locatedin the last known tracking area of UE 115-b, and may be examples of thepaging set selected by MME 135-b), may both transmit paging messagesbased on the received paging requests and according to the first CElevel (e.g., 5 dB CE). Base stations 105-b and 105-c may wait for aresponse from UE 115-b. However, since base station 105-b and 105-c aretransmitting the paging message based on the first CE level and not thesecond CE level, UE 115-b may fail to receive the page. In some cases,the base stations may send subsequent paging messages at different CElevels (i.e., blindly adjust the CE level).

At step 345 and 350, base stations 105-b and 105-c may both transmit asecond paging message based on the received paging requests andaccording to a second CE level. In some cases, base stations 105-b and105-c may transmit at the second CE level based on receiving theindication that UE 115-b is enable for dynamic CE operation. In somecases, the base stations 105-b and 105-c may increment the CE level onelevel based on the first CE level (e.g., 5 dB CE→10 dB CE). The basestations 105-b and 105-c may autonomously continue incrementing the CElevel until a response is received from UE 115-b or until the maximum CElevel was reached. In other cases, the base stations 105-b and 105-c maytransmit one or more paging messages to UE 115-b. For instance, basestations 105-b and 105-c may send two paging messages, one according toa first CE level (e.g., 5 dB CE) and another according to a second CElevel (e.g., 10 dB CE). The base stations 105-b and 105-c may continuesending additional paging messages for a next CE level until a responseis received from UE 115-b or until the maximum CE level was reached(i.e., no CE→5 dB CE, 5 dB CE→10 dB CE, 10 dB CE→15 dB CE, etc.). Insome cases, the second CE level (e.g., 10 dB CE) used for transmittingthe second paging message may correspond with the CE level set at UE115-b.

In some cases, base stations 105-b and 105-c may receive a second pagingrequest for UE 115-b from MIME 135-b while blindly adjusting the CElevel. The base station 105-b and 105-c may thus transmit two pagingmessages, one at the CE level associated with the second paging requestand the other at a CE level subsequent to the last paging message (e.g.,no CE and 10 dB CE).

At step 355, UE 115-b may establish an RRC connection with base station105-b after successfully receiving a paging request sent from basestation 105-b.

At step 360, base station 105-b may send the updated context information(e.g., device ID, UE-capabilities, CE level, dynamic CE indication,etc.) for UE 115-b to MME 135-b, where the information may be stored.

At step 365, MME 135-b may send a stop paging request to selected basestations in the tracking area, such as base station 105-c, based on thesuccessful establishment of the RRC connection.

FIG. 4 illustrates an example of a process flow 400 in a system thatsupports low cost paging in accordance with various aspects of thepresent disclosure. Process flow 400 may include operations performed byUE 115-c, base station 105-d, base station 105-e, and MME 135-c, whichmay be examples of a UE 115, base stations 105, and an MME 135-c whichmay be examples of corresponding devices described above with referenceto FIGS. 1-2. In some examples, UE 115-c may establish a connectionbased on a first CE level with base station 105-d, and upon entering anidle state the first CE level may be stored at MME 135-c. UE 115-c maycontinue to monitor channel conditions, and may select a second CE levelwithout indicating the change in CE level to the network (e.g., basestation 105-d, base station 105-e, or MME 135-c). MME 135-c may receivea paging notification for UE 115-c and may send a paging request,including the first CE level and dynamic CE level indicator, to basestation 105-d and neighboring base station 105-e. Base station 105-d andbase station 105-e may both be located in the same tracking area and mayboth blindly transmit multiple paging messages to UE 115-c at differentCE levels until a response is received.

At step 405, UE 115-c and base station 105-d may establish an RRCconnection. Establishing the RRC connection may include sending contextinformation (e.g., device ID, UE-capabilities, CE level, dynamic CEindication, etc.) for UE 115-c to MME 135-c, where the information maybe stored. In some cases, the information may be stored uponestablishing the connection, but in some cases, the information isstored upon connection release. The stored information may betransparent to MME 135-c. In some cases, the base station 105-d may sendan additional message to MME 135-c notifying MME 135-c that the UE 115-cis enabled for dynamic CE level adjustment. In other cases, UE 115-c maydirectly notify MME 135-c via the non-access stratum (NAS).

Establishing a dynamic CE configuration may include indicating supportfor dynamic CE paging. In some examples, the support is indicated to MME135-c via NAS signaling. In other examples, the support is indicated toa base station. In some examples, the support indication is based on auser configuration, an operator configuration, or both. The operatorconfiguration may be enabled via an indication of dynamic CE levelenabled in a universal subscriber identity module (USIM), via an OpenMobile Alliance Device Management (OMA DM) indication, or both.

At step 410, the network may perform an RRC release procedure. In somecases, the release procedure may occur if UE 115-c enters into an idlemode. The RRC release procedure may include releasing the RRC connection410-a between UE 115-c and base station 105-d, sending a context releaserequest 410-b from base station 105-d to MME 135-c, sending a contextrelease command 410-c from MME 135-c to base station 105-d, andresponding to MME 135-c indicating that the context release is complete410-d.

At step 415, UE 115-c may determine a CE level based on monitoringchannel conditions. Determining the CE level may include performingchannel measurements to determine whether a higher CE level may be used.For example, if UE 115-c determines that the channel measurements crossa threshold level the device may select a new CE level. For instance, UE115-c may change the CE level from the first CE level (e.g., 5 dB CE) tothe second CE level (e.g., 10 dB CE). In some cases, the second CE levelselected by UE 115-c may not be advertised to the network, such as tobase stations 105-b and 105-c and MME 135-c.

In some cases, UE 115-c may select a new CE level based on determiningthat a CE configuration timer has expired. The second CE level may beselected based on a limitation that the second CE level is higher thanthe first CE level.

At step 420, MME 135-c may receive a paging notification for UE 115-c. Apaging notification may include receiving a downlink data notificationmessage from the S-GW directing the MME 135-c to page the desired UE115-c.

At step 430, MME 135-c may send paging requests 430-a and 430-b to eachbase station, such as base stations 105-d and 105-e, in the last knowntracking area. In one example, the paging requests 430-a and 430-b mayinclude information associated with the last known CE level and anadjustment index of zero (i.e., an indication not to adjust the CElevel). Base stations 105-d and 105-e may transmit paging messages 430-cand 430-d at the last known CE level based on the received pagingrequest and the adjustment index. Base stations 105-d and 105-e may waitfor a response from UE 115-c acknowledging the paging message. However,since base station 105-d and 105-e are transmitting the paging messagebased on the first CE level and not the second CE level, UE 115-c mayfail to receive the page.

According to process flow 400, MME 135-c may determine the pagingstrategy if no response is received form UE 115-c. MME 135-c may re-sendthe paging requests 430-a and 430-b N times using the same adjustmentindex. Retransmitting the paging requests may mitigate a scenario inwhich UE 115-c misses the paging message.

At step 435, MME 135-c may increment the adjustment index and may send asecond set of paging requests 435-a and 435-b to base station 105-d and105-e. Base stations 105-d and 105-e may transmit paging messages 435-cand 435-d at a second CE level based on the adjustment index. In somecases, base stations 105-d and 105-e may increment the CE level and maytransmit a single paging messages according to a second level. In othercase, base stations 105-d and 105-e may increment the CE level andtransmit multiple paging messages according to the first level and thesecond level. MME 135-c may re-send the paging request 435-c and 435-d Ntimes.

FIG. 5 shows a block diagram of a wireless device 500 configured for lowcost paging in accordance with various aspects of the presentdisclosure. Wireless device 500 may be an example of aspects of a UE 115described with reference to FIGS. 1-4. Wireless device 500 may include areceiver 505, a dynamic CE module 510, or a transmitter 515. Wirelessdevice 500 may also include a processor. Each of these components may bein communication with each other.

The receiver 505 may receive information such as packets, user data, orcontrol information associated with various information channels (e.g.,control channels, data channels, and information related to low costpaging, etc.). Information may be passed on to the dynamic CE module510, and to other components of wireless device 500.

The dynamic CE module 510 may establish a dynamic CE configuration witha network entity, communicate in a connected mode utilizing a first CElevel of the dynamic CE configuration, select a second CE level of thedynamic CE configuration while in an idle mode, and receive a pagingindication transmitted utilizing the second CE level while in the idlemode.

The transmitter 515 may transmit signals received from other componentsof wireless device 500. In some examples, the transmitter 515 may becollocated with the receiver 505 in a transceiver module. Thetransmitter 515 may include a single antenna, or it may include aplurality of antennas.

FIG. 6 shows a block diagram of a wireless device 600 for low costpaging in accordance with various aspects of the present disclosure.Wireless device 600 may be an example of aspects of a wireless device500 or a UE 115 described with reference to FIGS. 1-5. Wireless device600 may include a receiver 505-a, a dynamic CE module 510-a, or atransmitter 515-a. Wireless device 600 may also include a processor.Each of these components may be in communication with each other. Thedynamic CE module 510-a may also include a dynamic CE configurationmodule 605, a CE communication module 610, a CE selection module 615,and a paging module 620.

The receiver 505-a may receive information which may be passed on todynamic CE module 510-a, and to other components of wireless device 600.The dynamic CE module 510-a may perform the operations described withreference to FIG. 5. The transmitter 515-a may transmit signals receivedfrom other components of wireless device 600.

The dynamic CE configuration module 605 may establish a dynamic CEconfiguration with a network entity as described with reference to FIGS.2-4. In some examples, identifying the dynamic CE configuration includesreceiving NAS signaling from the wireless device. The dynamic CEconfiguration module 605 may also transmit an RRC configuration messageto the wireless device, which may include the dynamic CE configuration.The dynamic CE configuration module 605 may also configure the wirelessdevice 600 with a CE configuration timer.

The CE communication module 610 may communicate in a connected modeutilizing a first CE level of the dynamic CE configuration as describedwith reference to FIGS. 2-4. The CE communication module 610 may alsocommunicate in the connected mode utilizing the second CE level based onthe paging indication.

The CE selection module 615 may select a second CE level of the dynamicCE configuration while in an idle mode as described with reference toFIGS. 2-4. The CE selection module 615 may also refrain from signalingan indication that the second CE level has been selected based on thedynamic CE configuration. In some examples, the second CE level may beselected based on a limitation that the second CE level may be higherthan the first CE level. In some examples, the second CE level may bebased on a limitation that the second CE level may be higher than thefirst CE level.

The paging module 620 may receive a paging indication transmittedutilizing the second CE level while in the idle mode as described withreference to FIGS. 2-4. The paging module 620 may also determine thatthe wireless device has not responded to the first paging message. Thepaging module 620 may, in some cases, transmit a third paging messagefor the wireless device according to the first CE level based on thedetermination. The third paging message may be transmittedsimultaneously with the second paging message. In some examples,transmitting the first paging message or the second paging messageincludes sending a paging request to a set of base stations in atracking area. The paging module 620 may also transmit a stop pagingrequest based on the message from the wireless device. The paging module620 may also retransmit the first paging message a threshold number oftimes, and transmitting the second paging message may be based onretransmitting the first paging message the threshold number of times.The paging module 620 may also receive a paging request from a corenetwork entity, and transmitting the first paging message ortransmitting the second paging message may be based on the pagingrequest.

FIG. 7 shows a block diagram 700 of a dynamic CE module 510-b which maybe a component of a wireless device 500 or a wireless device 600 for lowcost paging in accordance with various aspects of the presentdisclosure. The dynamic CE module 510-b may be an example of aspects ofa dynamic CE module 510 described with reference to FIGS. 5-6. Thedynamic CE module 510-b may include a dynamic CE configuration module605-a, a CE communication module 610-a, a CE selection module 615-a, anda paging module 620-a. Each of these modules may perform the functionsdescribed with reference to FIG. 6. The dynamic CE module 510-b may alsoinclude a dynamic CE support module 705, a reselection module 710, achannel condition module 715, and a CE configuration timer 720.

The dynamic CE support module 705 may be configured to include indicatesupport for dynamic CE paging in order to establish a dynamic CEconfiguration with a network entity as described with reference to FIGS.2-4. In some examples, the support may be indicated to an MME via NASsignaling. The support may be indicated to a base station. In someexamples, the support indication may be based on a user configuration,an operator configuration, or both. The operator configuration may beenabled via an indication of dynamic CE level enabled in a universalsubscriber identity module (USIM), via an Open Mobile Alliance DeviceManagement (OMA DM) indication, or both. The dynamic CE support module705 may also determine that a base station supports the dynamic CEconfiguration based on the dynamic CE support indication. The dynamic CEsupport module 705 may also determine that a base station does notsupport the dynamic CE configuration based on the dynamic CE supportindication. In some examples, the indication of support for dynamic CElevel depends in part on configuration, where the configuration includesa user configuration or an operator configuration, and the operatorconfiguration may include an indication of dynamic CE level enabled inthe USIM and indication via OMA DM. The dynamic CE support module 705may also transmit a dynamic CE support indication to a base stationserving the wireless device. The dynamic CE support module 705 may alsoreceive a dynamic CE support indication from a core network entity. Thedynamic CE support module 705 may also receive a dynamic CE value from acore network entity.

The reselection module 710 may reselect a base station while in the idlemode based on the determination as described with reference to FIGS.2-4. The reselection module 710 may also refrain from reselecting thebase station while in the idle mode based on the determination.

The channel condition module 715 may measure a channel condition, andselecting the second CE level may be based on the channel condition asdescribed with reference to FIGS. 2-4.

The CE configuration timer 720 may determine that a CE configurationtimer has expired; and selecting the second CE level may be based on theexpiration of the CE configuration timer as described with reference toFIGS. 2-4.

FIG. 8 shows a diagram of a system 800 including a UE 115 configured forlow cost paging in accordance with various aspects of the presentdisclosure. System 800 may include UE 115-d, which may be an example ofa wireless device 500, a wireless device 600, or a UE 115 described withreference to FIGS. 1, 2 and 5-7. UE 115-d may include a dynamic CEmodule 810, which may be an example of a dynamic CE module 510 describedwith reference to FIGS. 5-7. UE 115-d may also include a systeminformation module 825. UE 115-d may also include components forbi-directional voice and data communications including components fortransmitting communications and components for receiving communications.For example, UE 115-d may communicate bi-directionally with base station105-f or base station 105-g.

The system information module 825 may monitor system information for anindication of dynamic CE support in order to select a CE level or cellas described with reference to FIGS. 2-4.

UE 115-d may also include a processor 805, and memory 815 (includingsoftware (SW) 820), a transceiver 835, and one or more antenna(s) 840,each of which may communicate, directly or indirectly, with one another(e.g., via buses 845). The transceiver 835 may communicatebi-directionally, via the antenna(s) 840 or wired or wireless links,with one or more networks, as described above. For example, thetransceiver 835 may communicate bi-directionally with a base station 105or another UE 115. The transceiver 835 may include a modem to modulatethe packets and provide the modulated packets to the antenna(s) 840 fortransmission, and to demodulate packets received from the antenna(s)840. While UE 115-d may include a single antenna 840, UE 115-d may alsohave multiple antennas 840 capable of concurrently transmitting orreceiving multiple wireless transmissions.

The memory 815 may include random access memory (RAM) and read onlymemory (ROM). The memory 815 may store computer-readable,computer-executable software/firmware code 820 including instructionsthat, when executed, cause the processor 805 to perform variousfunctions described herein (e.g., low cost paging, etc.). Alternatively,the software/firmware code 820 may not be directly executable by theprocessor 805 but cause a computer (e.g., when compiled and executed) toperform functions described herein. The processor 805 may include anintelligent hardware device, (e.g., a central processing unit (CPU), amicrocontroller, an ASIC, etc.)

FIG. 9 shows a block diagram of a network entity 900 configured for lowcost paging in accordance with various aspects of the presentdisclosure. Network entity 900 may be an example of aspects of a basestation 105 or an MME 135 described with reference to FIGS. 1-8. Networkentity 900 may include a receiver 905, a network dynamic CE module 910,or a transmitter 915. Network entity 900 may also include a processor.Each of these components may be in communication with each other.

The receiver 905 may receive information such as packets, user data, orcontrol information associated with various information channels (e.g.,control channels, data channels, and information related to low costpaging, etc.). Information may be passed on to the network dynamic CEmodule 910, and to other components of network entity 900. In someexamples, the receiver 905 may receive a message from the wirelessdevice.

The network dynamic CE module 910 may identify a dynamic CEconfiguration for a wireless device, transmit a first paging message forthe wireless device according to a first CE level of the dynamic CEconfiguration, determine that the wireless device has not responded tothe first paging message, and transmit a second paging message for thewireless device according to a second CE level of the dynamic CEconfiguration based on the determination.

The transmitter 915 may transmit signals received from other componentsof network entity 900. In some examples, the transmitter 915 may becollocated with the receiver 905 in a transceiver module. Thetransmitter 915 may include a single antenna, or it may include aplurality of antennas.

FIG. 10 shows a block diagram of a network entity 1000 for low costpaging in accordance with various aspects of the present disclosure.Network entity 1000 may be an example of aspects of a network entity 900or a base station 105 or MME 135 described with reference to FIGS. 1-9.Network entity 1000 may include a receiver 905-a, a network dynamic CEmodule 910-a, or a transmitter 915-a. Network entity 1000 may alsoinclude a processor. Each of these components may be in communicationwith each other. The network dynamic CE module 910-a may also include aNW dynamic CE configuration module 1005, a NW paging module 1010, and aNW CE selection module 1015.

The receiver 905-a may receive information which may be passed on tonetwork dynamic CE module 910-a, and to other components of networkentity 1000. The network dynamic CE module 910-a may perform theoperations described with reference to FIG. 9. The transmitter 915-a maytransmit signals received from other components of network entity 1000.

The NW dynamic CE configuration module 1005 may identify a dynamic CEconfiguration for a wireless device as described with reference to FIGS.2-4.

The NW paging module 1010 may transmit a first paging message for thewireless device according to a first CE level of the dynamic CEconfiguration as described with reference to FIGS. 2-4.

The NW CE selection module 1015 may transmit a second paging message forthe wireless device according to a second CE level of the dynamic CEconfiguration based on the determination as described with reference toFIGS. 2-4.

FIG. 11 shows a block diagram 1100 of a network dynamic CE module 910-bwhich may be a component of a network entity 900 or a network entity1000 for low cost paging in accordance with various aspects of thepresent disclosure. The network dynamic CE module 910-b may be anexample of aspects of a network dynamic CE module 910 described withreference to FIGS. 9-10. The network dynamic CE module 910-b may includea NW dynamic CE configuration module 1005-a, a NW paging module 1010-a,and a NW CE selection module 1015-a. Each of these modules may performthe functions described with reference to FIG. 10. The network dynamicCE module 910-b may also include a connection release module 1105, a NWdynamic CE support module 1110, a CE adjustment module 1115, and a NWsystem information module 1120.

The connection release module 1105 may determine that the wirelessdevice is in an idle mode as described with reference to FIGS. 2-4. Insome examples, identifying the dynamic CE configuration receiving acontext release complete message from a base station comprising paginginformation, dynamic CE configuration information, or both. Theconnection release module 1105 may also transmit a context releasecomplete message to a core network entity comprising paging information,dynamic CE configuration information, or both.

The NW dynamic CE support module 1110 may transmit a dynamic CE supportindication to the wireless device as described with reference to FIGS.2-4.

The CE adjustment module 1115 may be configured such that transmittingthe second paging message may include indicating a CE level adjustmentindex indicating whether to use the first CE level, the second CE level,another CE level, or any combination thereof as described with referenceto FIGS. 2-4. The CE adjustment module 1115 may be configured such thattransmitting the second paging message may include transmitting a numberof retransmissions of the first paging message indicating whether to usethe first CE level, the second CE level, another CE level, or anycombination thereof as described with reference to FIGS. 2-4. In someexamples, transmitting a number of retransmissions of the first pagingmessage may include transmitting at least one retransmission of thefirst paging message. The CE adjustment module 1115 may also receive aCE level adjustment index from a core network entity, and the second CElevel may be based on the adjustment index.

The NW system information module 1120 may broadcast a dynamic CE supportindication as described with reference to FIGS. 2-4.

FIG. 12A shows a diagram of a system 1201 including a base station 105configured for low cost paging in accordance with various aspects of thepresent disclosure. System 1201 may include base station 105-g, whichmay be an example of a network entity 900, a network entity 1000, or abase station 105 described with reference to FIGS. 1, 2 and 9-11. BaseStation 105-g may include a network dynamic CE module 1210-a, which maybe an example of a network dynamic CE module 910 described withreference to FIGS. 9-11. Base Station 105-g may also include componentsfor bi-directional voice and data communications including componentsfor transmitting communications and components for receivingcommunications. For example, base station 105-g may communicatebi-directionally with UE 115-e or UE 115-f.

In some cases, base station 105-g may have one or more wired backhaullinks. Base station 105-g may have a wired backhaul link (e.g., S1interface, etc.) to the core network. Base station 105-g may alsocommunicate with other base stations 105, such as base station 105-h andbase station 105-i via inter-base station backhaul links (e.g., an X2interface). Each of the base stations 105 may communicate with UEs 115using the same or different wireless communications technologies. Insome cases, base station 105-g may communicate with other base stationssuch as 105-h or 105-i utilizing base station communication module1225-a. In some examples, base station communication module 1225 mayprovide an X2 interface within an LTE/LTE-a wireless communicationnetwork technology to provide communication between some of the basestations 105. In some examples, base station 105-g may communicate withother base stations through core network. In some cases, base station105-g may communicate with the entities of the core network such as MME135-c through network communications module 1230. For example, basestation 105-g may coordinate dynamic CE configuration for a UE 115 withMME 135-c.

The base station 105-g may include a processor 1205-a, memory 1215-a(including software (SW) 1220-a), transceiver 1235-a, and antenna(s)1240-a, which each may be in communication, directly or indirectly, withone another (e.g., over bus system 1245-a). The transceivers 1235-a maybe configured to communicate bi-directionally, via the antenna(s)1240-a, with the UEs 115, which may be multi-mode devices. Thetransceiver 1235-a (or other components of the base station 105-g) mayalso be configured to communicate bi-directionally, via the antennas1240-a, with one or more other base stations (not shown). Thetransceiver 1235-a may include a modem configured to modulate thepackets and provide the modulated packets to the antennas 1240-a fortransmission, and to demodulate packets received from the antennas1240-a. The base station 105-g may include multiple transceivers 1235-a,each with one or more associated antennas 1240-a. The transceiver may bean example of a combined receiver 905 and transmitter 915 of FIG. 9.

The memory 1215-a may include RAM and ROM. The memory 1215-a may alsostore computer-readable, computer-executable software code 1220-acontaining instructions that are configured to, when executed, cause theprocessor 1205-a to perform various functions described herein (e.g.,low cost paging, selecting coverage enhancement techniques, callprocessing, database management, message routing, etc.). Alternatively,the software 1220-a may not be directly executable by the processor1205-a but be configured to cause the computer, e.g., when compiled andexecuted, to perform functions described herein. The processor 1205-amay include an intelligent hardware device, e.g., a CPU, amicrocontroller, an ASIC, etc. The processor 1205-a may include variousspecial purpose processors such as encoders, queue processing modules,base band processors, radio head controllers, digital signal processor(DSPs), and the like.

The base station communications module 1225-a may manage communicationswith other base stations 105. In some cases a communications managementmodule may include a controller or scheduler for controllingcommunications with UEs 115 in cooperation with other base stations 105.For example, the base station communications module 1225-a maycoordinate scheduling for transmissions to UEs 115 for variousinterference mitigation techniques such as beamforming or jointtransmission.

FIG. 12B shows a diagram of a system 1201 including an MME 135-dconfigured for low cost paging in accordance with various aspects of thepresent disclosure. System 1202 may include MME 135-d, which may be anexample of a network entity 900, a network entity 1000, or an MME 135described with reference to FIGS. 1-4 and 9-11. MME 135-d may include anetwork dynamic CE module 1210-b, which may be an example of a networkdynamic CE module 910 described with reference to FIGS. 9-11. MME 135-dmay also include components for bi-directional communications includingcomponents for transmitting communications and components for receivingcommunications. For example, MME 135-d may communicate bi-directionallywith base station 105-j or base station 105-j. MME 135-d may alsocommunicate with UEs 115 (not shown) via the base station connections.

In some cases, MME 135-d may have one or more wired backhaul links. MME135-d may have a wired backhaul link (e.g., S1 interface, etc.) to oneor more base stations 105. Each of the base stations 105 may communicatewith UEs 115 using the same or different wireless communicationstechnologies. In some cases, MME 135-d may communicate with basestations such as 105-j or 105-k utilizing base station communicationmodule 1225-b. In some examples, base station communication module1225-b may provide an S1 interface within an LTE/LTE-a wirelesscommunication network technology. In some examples, MME 135-d maycommunicate with other base stations through core network 130-a. In somecases, MME 135-d may communicate with the core network 130-a (e.g., withan S-GW, not shown) through network communications module 1230-b.

The MME 135-d may include a processor 1205-b and memory 1215-b(including software (SW) 1220-b which each may be in communication,directly or indirectly, with one another (e.g., over bus system 1245-b).The memory 1215-b may include RAM and ROM. The memory 1215-b may alsostore computer-readable, computer-executable software code 1220-bcontaining instructions that are configured to, when executed, cause theprocessor 1205-b to perform various functions described herein (e.g.,low cost paging, selecting coverage enhancement techniques, callprocessing, database management, message routing, etc.). Alternatively,the software 1220-b may not be directly executable by the processor1205-b but be configured to cause the computer, e.g., when compiled andexecuted, to perform functions described herein. The processor 1205-bmay include an intelligent hardware device, e.g., a CPU, amicrocontroller, an ASIC, etc. The processor 1205-b may include variousspecial purpose processors such as encoders, queue processing modules,base band processors, radio head controllers, digital signal processor(DSPs), and the like.

The base station communications module 1225-b may manage communicationswith base stations 105. In some cases a communications management modulemay include a controller or scheduler for controlling communicationswith UEs 115 in cooperation with base stations 105. For example, thebase station communications module 1225-b may coordinate scheduling fortransmissions to UEs 115 for various interference mitigation techniquessuch as beamforming or joint transmission.

The components of wireless device 500, wireless device 600, dynamic CEmodule 510, system 700, network entity 900, network entity 1000, networkdynamic CE module 910, system 1201 and system 1202 may, individually orcollectively, be implemented with at least one ASIC adapted to performsome or all of the applicable functions in hardware. Alternatively, thefunctions may be performed by one or more other processing units (orcores), on at least one IC. In other examples, other types of integratedcircuits may be used (e.g., Structured/Platform ASICs, an FPGA, oranother semi-custom IC), which may be programmed in any manner known inthe art. The functions of each unit may also be implemented, in whole orin part, with instructions embodied in a memory, formatted to beexecuted by one or more general or application-specific processors.

FIG. 13 shows a flowchart illustrating a method 1300 for low cost pagingin accordance with various aspects of the present disclosure. Theoperations of method 1300 may be implemented by a UE 115 or itscomponents as described with reference to FIGS. 1-12. For example, theoperations of method 1300 may be performed by the dynamic CE module 510as described with reference to FIGS. 5-8. In some examples, a UE 115 mayexecute a set of codes to control the functional elements of the UE 115to perform the functions described below. Additionally or alternatively,the UE 115 may perform aspects the functions described below usingspecial-purpose hardware.

At block 1305, the UE 115 may establish a dynamic CE configuration witha network entity as described with reference to FIGS. 2-4. In certainexamples, the operations of block 1305 may be performed by the dynamicCE configuration module 605 as described with reference to FIG. 6.

At block 1310, the UE 115 may communicate in a connected mode utilizinga first CE level of the dynamic CE configuration as described withreference to FIGS. 2-4. In certain examples, the operations of block1310 may be performed by the CE communication module 610 as describedwith reference to FIG. 6.

At block 1315, the UE 115 may select a second CE level of the dynamic CEconfiguration while in an idle mode as described with reference to FIGS.2-4. In certain examples, the operations of block 1315 may be performedby the CE selection module 615 as described with reference to FIG. 6.

At block 1320, the UE 115 may receive a paging indication transmittedutilizing the second CE level while in the idle mode as described withreference to FIGS. 2-4. In certain examples, the operations of block1320 may be performed by the paging module 620 as described withreference to FIG. 6.

FIG. 14 shows a flowchart illustrating a method 1400 for low cost pagingin accordance with various aspects of the present disclosure. Theoperations of method 1400 may be implemented by a UE 115 or itscomponents as described with reference to FIGS. 1-12. For example, theoperations of method 1400 may be performed by the dynamic CE module 510as described with reference to FIGS. 5-8. In some examples, a UE 115 mayexecute a set of codes to control the functional elements of the UE 115to perform the functions described below. Additionally or alternatively,the UE 115 may perform aspects the functions described below usingspecial-purpose hardware. The method 1400 may also incorporate aspectsof method 1300 of FIG. 13.

At block 1405, the UE 115 may establish a dynamic CE configuration witha network entity as described with reference to FIGS. 2-4. In certainexamples, the operations of block 1405 may be performed by the dynamicCE configuration module 605 as described with reference to FIG. 6.

At block 1410, the UE 115 may communicate in a connected mode utilizinga first CE level of the dynamic CE configuration as described withreference to FIGS. 2-4. In certain examples, the operations of block1410 may be performed by the CE communication module 610 as describedwith reference to FIG. 6.

At block 1415, the UE 115 may select a second CE level of the dynamic CEconfiguration while in an idle mode as described with reference to FIGS.2-4. In certain examples, the operations of block 1415 may be performedby the CE selection module 615 as described with reference to FIG. 6.

At block 1420, the UE 115 may receive a paging indication transmittedutilizing the second CE level while in the idle mode as described withreference to FIGS. 2-4. In certain examples, the operations of block1420 may be performed by the paging module 620 as described withreference to FIG. 6.

At block 1425, the UE 115 may refrain from signaling an indication thatthe second CE level has been selected based on the dynamic CEconfiguration as described with reference to FIGS. 2-4. In certainexamples, the operations of block 1425 may be performed by the CEselection module 615 as described with reference to FIG. 6.

FIG. 15 shows a flowchart illustrating a method 1500 for low cost pagingin accordance with various aspects of the present disclosure. Theoperations of method 1500 may be implemented by a UE 115 or itscomponents as described with reference to FIGS. 1-12. For example, theoperations of method 1500 may be performed by the dynamic CE module 510as described with reference to FIGS. 5-8. In some examples, a UE 115 mayexecute a set of codes to control the functional elements of the UE 115to perform the functions described below. Additionally or alternatively,the UE 115 may perform aspects the functions described below usingspecial-purpose hardware. The method 1500 may also incorporate aspectsof methods 1300, and 1400 of FIGS. 13-14.

At block 1505, the UE 115 may establish a dynamic CE configuration witha network entity as described with reference to FIGS. 2-4. In certainexamples, the operations of block 1505 may be performed by the dynamicCE configuration module 605 as described with reference to FIG. 6.

At block 1510, the UE 115 may communicate in a connected mode utilizinga first CE level of the dynamic CE configuration as described withreference to FIGS. 2-4. In certain examples, the operations of block1510 may be performed by the CE communication module 610 as describedwith reference to FIG. 6.

At block 1515, the UE 115 may select a second CE level of the dynamic CEconfiguration while in an idle mode as described with reference to FIGS.2-4. In certain examples, the operations of block 1515 may be performedby the CE selection module 615 as described with reference to FIG. 6.

At block 1520, the UE 115 may receive a paging indication transmittedutilizing the second CE level while in the idle mode as described withreference to FIGS. 2-4. In certain examples, the operations of block1520 may be performed by the paging module 620 as described withreference to FIG. 6.

At block 1525, the UE 115 may monitor system information for a dynamicCE support indication as described with reference to FIGS. 2-4. Incertain examples, the operations of block 1525 may be performed by thesystem information module 825 as described with reference to FIG. 8.

At block 1530, the UE 115 may determine that a base station 105 supportsthe dynamic CE configuration based on the dynamic CE support indicationas described with reference to FIGS. 2-4. In certain examples, theoperations of block 1530 may be performed by the dynamic CE supportmodule 705 as described with reference to FIG. 7.

At block 1535, the UE 115 may reselect a base station 105 while in theidle mode based on the determination as described with reference toFIGS. 2-4. In certain examples, the operations of block 1535 may beperformed by the reselection module 710 as described with reference toFIG. 7.

FIG. 16 shows a flowchart illustrating a method 1600 for low cost pagingin accordance with various aspects of the present disclosure. Theoperations of method 1600 may be implemented by a network entity such asa base station 105, an MME 135 or its components as described withreference to FIGS. 1-12. For example, the operations of method 1600 maybe performed by the network dynamic CE module 910 as described withreference to FIGS. 9-12. In some examples, a network entity may executea set of codes to control the functional elements of the network entityto perform the functions described below. Additionally or alternatively,the network entity may perform aspects the functions described belowusing special-purpose hardware. The method 1600 may also incorporateaspects of methods 1300, 1400, and 1500 of FIGS. 13-15.

At block 1605, the network entity may identify a dynamic CEconfiguration for a wireless device as described with reference to FIGS.2-4. In certain examples, the operations of block 1605 may be performedby the NW dynamic CE configuration module 1005 as described withreference to FIG. 10.

At block 1610, the network entity may transmit a first paging messagefor the wireless device according to a first CE level of the dynamic CEconfiguration as described with reference to FIGS. 2-4. In certainexamples, the operations of block 1610 may be performed by the NW pagingmodule 1010 as described with reference to FIG. 10.

At block 1615, the network entity may determine that the wireless devicehas not responded to the first paging message as described withreference to FIGS. 2-4. In certain examples, the operations of block1615 may be performed by the paging module 620 as described withreference to FIG. 6.

At block 1620, the network entity may transmit a second paging messagefor the wireless device according to a second CE level of the dynamic CEconfiguration based on the determination as described with reference toFIGS. 2-4. In certain examples, the operations of block 1620 may beperformed by the NW CE selection module 1015 as described with referenceto FIG. 10.

FIG. 17 shows a flowchart illustrating a method 1700 for low cost pagingin accordance with various aspects of the present disclosure. Theoperations of method 1700 may be implemented by a MME 135 or itscomponents as described with reference to FIGS. 1-12. For example, theoperations of method 1700 may be performed by the network dynamic CEmodule 910 as described with reference to FIGS. 9-12. In some examples,a MME 135 may execute a set of codes to control the functional elementsof the MME 135 to perform the functions described below. Additionally oralternatively, the MME 135 may perform aspects the functions describedbelow using special-purpose hardware. The method 1700 may alsoincorporate aspects of methods 1300, 1400, 1500, and 1600 of FIGS.13-16.

At block 1705, the MME 135 may identify a dynamic CE configuration for awireless device as described with reference to FIGS. 2-4. In certainexamples, the operations of block 1705 may be performed by the NWdynamic CE configuration module 1005 as described with reference to FIG.10.

At block 1710, the MME 135 may transmit a first paging message for thewireless device according to a first CE level of the dynamic CEconfiguration as described with reference to FIGS. 2-4. In certainexamples, the operations of block 1710 may be performed by the NW pagingmodule 1010 as described with reference to FIG. 10.

At block 1715, the MME 135 may determine that the wireless device hasnot responded to the first paging message as described with reference toFIGS. 2-4. In certain examples, the operations of block 1715 may beperformed by the paging module 620 as described with reference to FIG.6.

At block 1720, the MME 135 may transmit a second paging message for thewireless device according to a second CE level of the dynamic CEconfiguration based on the determination as described with reference toFIGS. 2-4. In some cases, transmitting the first paging message or thesecond paging message includes: sending a paging request to a set ofbase stations 105 in a tracking area. In certain examples, theoperations of block 1720 may be performed by the NW CE selection module1015 as described with reference to FIG. 10.

FIG. 18 shows a flowchart illustrating a method 1800 for low cost pagingin accordance with various aspects of the present disclosure. Theoperations of method 1800 may be implemented by a base station 105 orits components as described with reference to FIGS. 1-12. For example,the operations of method 1800 may be performed by the network dynamic CEmodule 910 as described with reference to FIGS. 9-12. In some examples,a base station 105 may execute a set of codes to control the functionalelements of the base station 105 to perform the functions describedbelow. Additionally or alternatively, the base station 105 may performaspects the functions described below using special-purpose hardware.The method 1800 may also incorporate aspects of methods 1300, 1400,1500, 1600, and 1700 of FIGS. 13-17.

At block 1805, the base station 105 may identify a dynamic CEconfiguration for a wireless device as described with reference to FIGS.2-4. In certain examples, the operations of block 1805 may be performedby the NW dynamic CE configuration module 1005 as described withreference to FIG. 10.

At block 1810, the base station 105 may transmit a first paging messagefor the wireless device according to a first CE level of the dynamic CEconfiguration as described with reference to FIGS. 2-4. In certainexamples, the operations of block 1810 may be performed by the NW pagingmodule 1010 as described with reference to FIG. 10.

At block 1815, the base station 105 may determine that the wirelessdevice has not responded to the first paging message as described withreference to FIGS. 2-4. In certain examples, the operations of block1815 may be performed by the paging module 620 as described withreference to FIG. 6.

At block 1820, the base station 105 may transmit a second paging messagefor the wireless device according to a second CE level of the dynamic CEconfiguration based on the determination as described with reference toFIGS. 2-4. In certain examples, the operations of block 1820 may beperformed by the NW CE selection module 1015 as described with referenceto FIG. 10.

At block 1825, the base station 105 may receive a paging request from acore network entity, such that transmitting the first paging message ortransmitting the second paging message may be based on the pagingrequest as described with reference to FIGS. 2-4. In certain examples,the operations of block 1825 may be performed by the paging module 620as described with reference to FIG. 6.

Thus, methods 1300, 1400, 1500, 1600, 1700, and 1800 may provide for lowcost paging. It should be noted that methods 1300, 1400, 1500, 1600,1700, and 1800 describe possible implementation, and that the operationsand the steps may be rearranged or otherwise modified such that otherimplementations are possible. In some examples, aspects from two or moreof the methods 1300, 1400, 1500, 1600, 1700, and 1800 may be combined.

The description herein provides examples, and is not limiting of thescope, applicability, or examples set forth in the claims. Changes maybe made in the function and arrangement of elements discussed withoutdeparting from the scope of the disclosure. Various examples may omit,substitute, or add various procedures or components as appropriate.Also, features described with respect to some examples may be combinedin other examples.

Techniques described herein may be used for various wirelesscommunications systems such as code division multiple access (CDMA),time division multiple access (TDMA), frequency division multiple access(FDMA), orthogonal frequency division multiple access (OFDMA), singlecarrier frequency division multiple access (SC-FDMA), and other systems.The terms “system” and “network” are often used interchangeably. A CDMAsystem may implement a radio technology such as CDMA2000, UniversalTerrestrial Radio Access (UTRA), etc. CDMA2000 covers IS-2000, IS-95,and IS-856 standards. IS-2000 Releases 0 and A are commonly referred toas CDMA2000 1×, 1×, etc. IS-856 (TIA-856) is commonly referred to asCDMA2000 1×EV-DO, High Rate Packet Data (HRPD), etc. UTRA includesWideband CDMA (WCDMA) and other variants of CDMA. A TDMA system mayimplement a radio technology such as Global System for MobileCommunications (GSM). An OFDMA system may implement a radio technologysuch as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), IEEE 802.11(Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA andE-UTRA are part of Universal Mobile Telecommunications system (UMTS).3GPP Long Term Evolution (LTE) and LTE-advanced (LTE-a) are new releasesof Universal Mobile Telecommunications System (UMTS) that use E-UTRA.UTRA, E-UTRA, UMTS, LTE, LTE-a, and Global System for Mobilecommunications (GSM) are described in documents from an organizationnamed “3rd Generation Partnership Project” (3GPP). CDMA2000 and UMB aredescribed in documents from an organization named “3rd GenerationPartnership Project 2” (3GPP2). The techniques described herein may beused for the systems and radio technologies mentioned above as well asother systems and radio technologies. The description herein, however,describes an LTE system for purposes of example, and LTE terminology isused in much of the description above, although the techniques areapplicable beyond LTE applications.

In LTE/LTE-a networks, including such networks described herein, theterm evolved node B (eNB) may be generally used to describe the basestations. The wireless communications system or systems described hereinmay include a heterogeneous LTE/LTE—a network in which different typesof eNBs provide coverage for various geographical regions. For example,each eNB or base station may provide communication coverage for a macrocell, a small cell, or other types of cell. The term “cell” is a 3GPPterm that can be used to describe a base station, a carrier or componentcarrier associated with a base station, or a coverage area (e.g.,sector, etc.) of a carrier or base station, depending on context.

Base stations may include or may be referred to by those skilled in theart as a base transceiver station, a radio base station, an accesspoint, a radio transceiver, a NodeB, eNodeB (eNB), Home NodeB, a HomeeNodeB, or some other suitable terminology. The geographic coverage areafor a base station may be divided into sectors making up a portion ofthe coverage area. The wireless communications system or systemsdescribed herein may include base stations of different types (e.g.,macro or small cell base stations). The UEs described herein may be ableto communicate with various types of base stations and network equipmentincluding macro eNBs, small cell eNBs, relay base stations, and thelike. There may be overlapping geographic coverage areas for differenttechnologies.

A macro cell generally covers a relatively large geographic area (e.g.,several kilometers in radius) and may allow unrestricted access by UEswith service subscriptions with the network provider. A small cell is alower-powered base station, as compared with a macro cell, that mayoperate in the same or different (e.g., licensed, unlicensed, etc.)frequency bands as macro cells. Small cells may include pico cells,femto cells, and micro cells according to various examples. A pico cell,for example, may cover a small geographic area and may allowunrestricted access by UEs with service subscriptions with the networkprovider. A femto cell may also cover a small geographic area (e.g., ahome) and may provide restricted access by UEs having an associationwith the femto cell (e.g., UEs in a closed subscriber group (CSG), UEsfor users in the home, and the like). An eNB for a macro cell may bereferred to as a macro eNB. An eNB for a small cell may be referred toas a small cell eNB, a pico eNB, a femto eNB, or a home eNB. An eNB maysupport one or multiple (e.g., two, three, four, and the like) cells(e.g., component carriers). A UE may be able to communicate with varioustypes of base stations and network equipment including macro eNBs, smallcell eNBs, relay base stations, and the like.

The wireless communications system or systems described herein maysupport synchronous or asynchronous operation. For synchronousoperation, the base stations may have similar frame timing, andtransmissions from different base stations may be approximately alignedin time. For asynchronous operation, the base stations may havedifferent frame timing, and transmissions from different base stationsmay not be aligned in time. The techniques described herein may be usedfor either synchronous or asynchronous operations.

The downlink transmissions described herein may also be called forwardlink transmissions while the uplink transmissions may also be calledreverse link transmissions. Each communication link describedherein—including, for example, wireless communications system 100 and200 of FIGS. 1 and 2—may include one or more carriers, where eachcarrier may be a signal made up of multiple sub-carriers (e.g., waveformsignals of different frequencies). Each modulated signal may be sent ona different sub-carrier and may carry control information (e.g.,reference signals, control channels, etc.), overhead information, userdata, etc. The communication links described herein (e.g., communicationlinks 125 of FIG. 1) may transmit bidirectional communications usingfrequency division duplex (FDD) (e.g., using paired spectrum resources)or TDD operation (e.g., using unpaired spectrum resources). Framestructures may be defined for FDD (e.g., frame structure type 1) and TDD(e.g., frame structure type 2).

The description set forth herein, in connection with the appendeddrawings, describes example configurations and does not represent allthe examples that may be implemented or that are within the scope of theclaims. The term “exemplary” used herein means “serving as an example,instance, or illustration,” and not “preferred” or “advantageous overother examples.” The detailed description includes specific details forthe purpose of providing an understanding of the described techniques.These techniques, however, may be practiced without these specificdetails. In some instances, well-known structures and devices are shownin block diagram form in order to avoid obscuring the concepts of thedescribed examples.

In the appended figures, similar components or features may have thesame reference label. Further, various components of the same type maybe distinguished by following the reference label by a dash and a secondlabel that distinguishes among the similar components. If just the firstreference label is used in the specification, the description isapplicable to any one of the similar components having the same firstreference label irrespective of the second reference label.

Information and signals described herein may be represented using any ofa variety of different technologies and techniques. For example, data,instructions, commands, information, signals, bits, symbols, and chipsthat may be referenced throughout the above description may berepresented by voltages, currents, electromagnetic waves, magneticfields or particles, optical fields or particles, or any combinationthereof.

The various illustrative blocks and modules described in connection withthe disclosure herein may be implemented or performed with ageneral-purpose processor, a DSP, an ASIC, an FPGA or other programmablelogic device, discrete gate or transistor logic, discrete hardwarecomponents, or any combination thereof designed to perform the functionsdescribed herein. A general-purpose processor may be a microprocessor,but in the alternative, the processor may be any conventional processor,controller, microcontroller, or state machine. A processor may also beimplemented as a combination of computing devices (e.g., a combinationof a digital signal processor (DSP) and a microprocessor, multiplemicroprocessors, one or more microprocessors in conjunction with a DSPcore, or any other such configuration).

The functions described herein may be implemented in hardware, softwareexecuted by a processor, firmware, or any combination thereof. Ifimplemented in software executed by a processor, the functions may bestored on or transmitted over as one or more instructions or code on acomputer-readable medium. Other examples and implementations are withinthe scope of the disclosure and appended claims. For example, due to thenature of software, functions described above can be implemented usingsoftware executed by a processor, hardware, firmware, hardwiring, orcombinations of any of these. Features implementing functions may alsobe physically located at various positions, including being distributedsuch that portions of functions are implemented at different physicallocations. Also, as used herein, including in the claims, “or” as usedin a list of items (for example, a list of items prefaced by a phrasesuch as “at least one of” or “one or more of”) indicates an inclusivelist such that, for example, a list of at least one of A, B, or C meansA or B or C or AB or AC or BC or ABC (i.e., A and B and C).

Computer-readable media includes both non-transitory computer storagemedia and communication media including any medium that facilitatestransfer of a computer program from one place to another. Anon-transitory storage medium may be any available medium that can beaccessed by a general purpose or special purpose computer. By way ofexample, and not limitation, non-transitory computer-readable media cancomprise RAM, ROM, electrically erasable programmable read only memory(EEPROM), compact disk (CD) ROM or other optical disk storage, magneticdisk storage or other magnetic storage devices, or any othernon-transitory medium that can be used to carry or store desired programcode means in the form of instructions or data structures and that canbe accessed by a general-purpose or special-purpose computer, or ageneral-purpose or special-purpose processor. Also, any connection isproperly termed a computer-readable medium. For example, if the softwareis transmitted from a website, server, or other remote source using acoaxial cable, fiber optic cable, twisted pair, digital subscriber line(DSL), or wireless technologies such as infrared, radio, and microwave,then the coaxial cable, fiber optic cable, twisted pair, DSL, orwireless technologies such as infrared, radio, and microwave areincluded in the definition of medium. Disk and disc, as used herein,include CD, laser disc, optical disc, digital versatile disc (DVD),floppy disk and Blu-ray disc where disks usually reproduce datamagnetically, while discs reproduce data optically with lasers.Combinations of the above are also included within the scope ofcomputer-readable media.

The description herein is provided to enable a person skilled in the artto make or use the disclosure. Various modifications to the disclosurewill be readily apparent to those skilled in the art, and the genericprinciples defined herein may be applied to other variations withoutdeparting from the scope of the disclosure. Thus, the disclosure is notto be limited to the examples and designs described herein but is to beaccorded the broadest scope consistent with the principles and novelfeatures disclosed herein.

What is claimed is:
 1. A method of wireless communication, comprising:establishing a dynamic coverage enhancement (CE) configuration with anetwork entity; communicating in a connected mode utilizing a first CElevel of the dynamic CE configuration; selecting a second CE level ofthe dynamic CE configuration while in an idle mode; and receiving apaging indication transmitted utilizing the second CE level while in theidle mode.
 2. The method of claim 1, further comprising: communicatingin the connected mode utilizing the second CE level based at least inpart on the paging indication.
 3. The method of claim 1, whereinestablishing a dynamic CE configuration with the network entitycomprises: indicating support for dynamic CE paging.
 4. The method ofclaim 3, wherein the support is indicated to a base station.
 5. Themethod of claim 3, wherein the support indication is based at least inpart on a user configuration, an operator configuration, or both.
 6. Themethod of claim 5, wherein the operator configuration is enabled via anindication of dynamic CE level enabled in a universal subscriberidentity module (USIM), via an Open Mobile Alliance Device Management(OMA DM) indication, or both.
 7. The method of claim 1, furthercomprising: refraining from signaling an indication that the second CElevel has been selected based at least in part on the dynamic CEconfiguration.
 8. The method of claim 1, further comprising: monitoringsystem information for a dynamic CE support indication.
 9. The method ofclaim 8, further comprising: determining that a base station supportsthe dynamic CE configuration based at least in part on the dynamic CEsupport indication; and reselecting the base station while in the idlemode based at least in part on the determination.
 10. The method ofclaim 8, further comprising: determining that a base station does notsupport the dynamic CE configuration based at least in part on thedynamic CE support indication; and refraining from reselecting the basestation while in the idle mode based at least in part on thedetermination.
 11. The method of claim 1, further comprising: measuringa channel condition, wherein selecting the second CE level is based atleast in part on the channel condition.
 12. The method of claim 1,wherein the second CE level is selected based at least in part on alimitation that the second CE level is higher than the first CE level.13. The method of claim 1, wherein the indication of support for dynamicCE level depends in part on a configuration, where the configurationcomprises a user configuration or an operator configuration, wherein theoperator configuration comprises an indication of dynamic CE levelenabled in the USIM or an indication via OMA DM.
 14. A method ofwireless communication at a base station, comprising: identifying adynamic CE configuration for a wireless device; transmitting a firstpaging message for the wireless device according to a first CE level ofthe dynamic CE configuration; determining that the wireless device hasnot responded to the first paging message; and transmitting a secondpaging message for the wireless device according to a second CE level ofthe dynamic CE configuration based at least in part on thedetermination.
 15. The method of claim 14, further comprising:determining that the wireless device is in an idle mode.
 16. The methodof claim 14, further comprising: transmitting a third paging message forthe wireless device according to the first CE level based at least inpart on the determination.
 17. The method of claim 14, furthercomprising: receiving a message from the wireless device.
 18. The methodof claim 17, further comprising: transmitting a stop paging requestbased at least in part on the message from the wireless device.
 19. Themethod of claim 14, further comprising: retransmitting the first pagingmessage a threshold number of times, wherein transmitting the secondpaging message is based at least in part on retransmitting the firstpaging message the threshold number of times.
 20. The method of claim14, wherein transmitting the second paging message comprises: indicatinga CE level adjustment index indicating whether to use the first CElevel, the second CE level, another CE level, or any combinationthereof.
 21. The method of claim 14, wherein transmitting the secondpaging message comprises: transmitting a number of retransmissions ofthe first paging message indicating whether to use the first CE level,the second CE level, another CE level, or any combination thereof. 22.The method of claim 14, further comprising: receiving a CE leveladjustment index from a core network entity, wherein the second CE levelis based at least in part on the CE level adjustment index.
 23. Themethod of claim 14, further comprising: receiving additional informationassociated with the first CE level from a core network entity, whereinthe second CE level is based at least in part on the additionalinformation.
 24. The method of claim 14, further comprising: receiving adynamic CE support indication from a core network entity.
 25. The methodof claim 14, further comprising: receiving a dynamic CE value from acore network entity.
 26. The method of claim 14, further comprising:transmitting a radio resource control (RRC) configuration message to thewireless device comprising the dynamic CE configuration.
 27. The methodof claim 14, further comprising: transmitting a context release completemessage to a core network entity comprising paging information, dynamicCE configuration information, or both.
 28. The method of claim 14,wherein the second CE level is based at least in part on a limitationthat the second CE level is higher than the first CE level.
 29. Anapparatus for wireless communication, comprising: means for establishinga dynamic coverage enhancement (CE) configuration with a network entity;means for communicating in a connected mode utilizing a first CE levelof the dynamic CE configuration; means for selecting a second CE levelof the dynamic CE configuration while in an idle mode; and means forreceiving a paging indication transmitted utilizing the second CE levelwhile in the idle mode.
 30. An apparatus for wireless communication,comprising: means for identifying a dynamic CE configuration for awireless device; means for transmitting a first paging message for thewireless device according to a first CE level of the dynamic CEconfiguration; means for determining that the wireless device has notresponded to the first paging message; and means for transmitting asecond paging message for the wireless device according to a second CElevel of the dynamic CE configuration based at least in part on thedetermination.
 31. An apparatus for wireless communication, comprising:a processor; memory in electronic communication with the processor; andinstructions stored in the memory and operable, when executed by theprocessor, to cause the apparatus to: establish a dynamic coverageenhancement (CE) configuration with a network entity; communicate in aconnected mode utilizing a first CE level of the dynamic CEconfiguration; select a second CE level of the dynamic CE configurationwhile in an idle mode; and receive a paging indication transmittedutilizing the second CE level while in the idle mode.
 32. The apparatusof claim 31, wherein the instructions are operable to cause theapparatus to: communicate in the connected mode utilizing the second CElevel based at least in part on the paging indication.
 33. The apparatusof claim 31, wherein establishing a dynamic CE configuration with thenetwork entity comprises: indicating support for dynamic CE paging. 34.The apparatus of claim 33, wherein the support is indicated to a basestation.
 35. The apparatus of claim 33, wherein the support indicationis based at least in part on a user configuration, an operatorconfiguration, or both.
 36. The apparatus of claim 35, wherein theoperator configuration is enabled via an indication of dynamic CE levelenabled in a universal subscriber identity module (USIM), via an OpenMobile Alliance Device Management (OMA DM) indication, or both.
 37. Theapparatus of claim 31, wherein the instructions are operable to causethe apparatus to: refrain from signaling an indication that the secondCE level has been selected based at least in part on the dynamic CEconfiguration.
 38. The apparatus of claim 31, wherein the instructionsare operable to cause the apparatus to: monitor system information for adynamic CE support indication.
 39. The apparatus of claim 38, whereinthe instructions are operable to cause the apparatus to: determine thata base station supports the dynamic CE configuration based at least inpart on the dynamic CE support indication; and reselect the base stationwhile in the idle mode based at least in part on the determination. 40.The apparatus of claim 38, wherein the instructions are operable tocause the apparatus to: determine that a base station does not supportthe dynamic CE configuration based at least in part on the dynamic CEsupport indication; and refrain from reselecting the base station whilein the idle mode based at least in part on the determination.
 41. Theapparatus of claim 31, wherein the instructions are operable to causethe apparatus to: measure a channel condition, wherein selecting thesecond CE level is based at least in part on the channel condition. 42.The apparatus of claim 31, wherein the second CE level is selected basedat least in part on a limitation that the second CE level is higher thanthe first CE level.
 43. The apparatus of claim 31, wherein theindication of support for dynamic CE level depends in part onconfiguration, where the configuration comprises a user configuration oran operator configuration, wherein the operator configuration comprisesan indication of dynamic CE level enabled in the USIM or an indicationvia OMA DM.
 44. An apparatus for wireless communication, comprising: aprocessor; memory in electronic communication with the processor; andinstructions stored in the memory and operable, when executed by theprocessor, to cause the apparatus to: identify a dynamic CEconfiguration for a wireless device; transmit a first paging message forthe wireless device according to a first CE level of the dynamic CEconfiguration; determine that the wireless device has not responded tothe first paging message; and transmit a second paging message for thewireless device according to a second CE level of the dynamic CEconfiguration based at least in part on the determination.
 45. Theapparatus of claim 44, wherein the instructions are operable to causethe apparatus to: determine that the wireless device is in an idle mode.46. The apparatus of claim 44, wherein the instructions are operable tocause the apparatus to: transmit a third paging message for the wirelessdevice according to the first CE level based at least in part on thedetermination.
 47. The apparatus of claim 44, wherein the instructionsare operable to cause the apparatus to: receive a message from thewireless device.
 48. The apparatus of claim 47, wherein the instructionsare operable to cause the apparatus to: transmit a stop paging requestbased at least in part on the message from the wireless device.
 49. Theapparatus of claim 44, wherein the instructions are operable to causethe apparatus to: retransmit the first paging message a threshold numberof times, wherein transmitting the second paging message is based atleast in part on retransmitting the first paging message the thresholdnumber of times.
 50. The apparatus of claim 44, wherein transmitting thesecond paging message comprises: indicating a CE level adjustment indexindicating whether to use the first CE level, the second CE level,another CE level, or any combination thereof.
 51. The apparatus of claim44, wherein transmitting the second paging message comprises:transmitting a number of retransmissions of the first paging messageindicating whether to use the first CE level, the second CE level,another CE level, or any combination thereof.
 52. The apparatus of claim44, wherein the instructions are operable to cause the apparatus to:receive a CE level adjustment index from a core network entity, whereinthe second CE level is based at least in part on the CE level adjustmentindex.
 53. The apparatus of claim 44, wherein the instructions areoperable to cause the apparatus to: receive a CE level adjustment indexfrom a core network entity, wherein the second CE level is based atleast in part on the CE level adjustment index.
 54. The apparatus ofclaim 44, wherein the instructions are operable to cause the apparatusto: receive additional information associated with the first CE levelfrom a core network entity, wherein the second CE level is based atleast in part on the additional information.
 55. The apparatus of claim44, wherein the instructions are operable to cause the apparatus to:receive a dynamic CE support indication from a core network entity. 56.The apparatus of claim 44, wherein the instructions are operable tocause the apparatus to: receive a dynamic CE value from a core networkentity.
 57. The apparatus of claim 44, wherein the instructions areoperable to cause the apparatus to: transmit a radio resource control(RRC) configuration message to the wireless device comprising thedynamic CE configuration.
 58. The apparatus of claim 44, wherein theinstructions are operable to cause the apparatus to: transmit a contextrelease complete message to a core network entity comprising paginginformation, dynamic CE configuration information, or both.
 59. Theapparatus of claim 44, wherein the second CE level is based at least inpart on a limitation that the second CE level is higher than the firstCE level.
 60. A non-transitory computer-readable medium storing code forwireless communication, the code comprising instructions executable to:establish a dynamic coverage enhancement (CE) configuration with anetwork entity; communicate in a connected mode utilizing a first CElevel of the dynamic CE configuration; select a second CE level of thedynamic CE configuration while in an idle mode; and receive a pagingindication transmitted utilizing the second CE level while in the idlemode.
 61. A non-transitory computer-readable medium storing code forwireless communication, the code comprising instructions executable to:identify a dynamic CE configuration for a wireless device; transmit afirst paging message for the wireless device according to a first CElevel of the dynamic CE configuration; determine that the wirelessdevice has not responded to the first paging message; and transmit asecond paging message for the wireless device according to a second CElevel of the dynamic CE configuration based at least in part on thedetermination.
 62. A method of wireless communication at a core networkentity, comprising: identifying a dynamic CE configuration for awireless device; transmitting a first paging message for the wirelessdevice to be used by a base station according to a first CE level of thedynamic CE configuration; determining that the wireless device has notresponded to the first paging message; and transmitting additionalinformation regarding the dynamic CE configuration based at least inpart on the determination.
 63. The method of claim 62, furthercomprising: determining that the wireless device is in an idle mode. 64.The method of claim 62, wherein transmitting additional informationregarding the dynamic CE configuration comprises: transmitting a secondpaging message for the wireless device to be used by the base stationbased at least in part on the determination.
 65. The method of claim 64,further comprising: transmitting a third paging message for the wirelessdevice to be used by the base station according to the first CE levelbased at least in part on the determination.
 66. The method of claim 62,further comprising: transmitting a dynamic CE support indication to abase station serving the wireless device.
 67. The method of claim 62,further comprising: transmitting a dynamic CE value to a base stationserving the wireless device.
 68. The method of claim 62, whereinidentifying the dynamic CE configuration comprises: receiving a contextrelease complete message from a base station comprising paginginformation or dynamic CE configuration information, or both.
 69. Themethod of claim 64, wherein transmitting the first paging message or thesecond paging message comprises: sending a paging request to a set ofbase stations in a tracking area.
 70. An apparatus for wirelesscommunication, comprising: means for identifying a dynamic CEconfiguration for a wireless device; means for transmitting a firstpaging message for the wireless device to be used by a base stationaccording to a first CE level of the dynamic CE configuration; means fordetermining that the wireless device has not responded to the firstpaging message; and means for transmitting additional informationregarding the dynamic CE configuration based at least in part on thedetermination.
 71. An apparatus for wireless communication, comprising:a processor; memory in electronic communication with the processor; andinstructions stored in the memory and operable, when executed by theprocessor, to cause the apparatus to: identify a dynamic CEconfiguration for a wireless device; transmit a first paging message forthe wireless device to be used by a base station according to a first CElevel of the dynamic CE configuration; determine that the wirelessdevice has not responded to the first paging message; and transmitadditional information regarding the dynamic CE configuration based atleast in part on the determination.
 72. The apparatus of claim 71,wherein the instructions are operable to cause the apparatus to:determine that the wireless device is in an idle mode.
 73. The apparatusof claim 71, wherein the instructions are operable to cause theapparatus to: transmit a second paging message for the wireless deviceto be used by the base station based at least in part on thedetermination.
 74. The apparatus of claim 71, wherein the instructionsare operable to cause the apparatus to: transmit a third paging messagefor the wireless device to be used by the base station according to thefirst CE level based at least in part on the determination.
 75. Theapparatus of claim 71, wherein the instructions are operable to causethe apparatus to: transmit a dynamic CE support indication to a basestation serving the wireless device.
 76. The apparatus of claim 71,wherein the instructions are operable to cause the apparatus to:transmit a dynamic CE value to a base station serving the wirelessdevice.
 77. The apparatus of claim 71, wherein the instructions areoperable to cause the apparatus to: receive a context release completemessage from a base station comprising paging information or dynamic CEconfiguration information, or both.
 78. The apparatus of claim 71,wherein the instructions are operable to cause the apparatus to: send apaging request to a set of base stations in a tracking area.
 79. Anon-transitory computer-readable medium storing code for wirelesscommunication, the code comprising instructions executable to: identifya dynamic CE configuration for a wireless device; transmit a firstpaging message for the wireless device to be used by a base stationaccording to a first CE level of the dynamic CE configuration; determinethat the wireless device has not responded to the first paging message;and transmit additional information regarding the dynamic CEconfiguration based at least in part on the determination.